SmogRank / Countries / Finland / April 2026

Most polluted cities in Finland, April 2026

12 cities in Finland ranked by their average PM2.5 over the 30 days. Worst: Kuopio at 8.3 µg/m³, #1,072 of 2,283 cities in the world. Cleanest: Klaukkala at 2.9. A city needs measurements on 70% of the days to be ranked.

  1. 1KuopioNorth Savo
    8.3
  2. 2PoriSatakunta
    6.7
  3. 3MyyrmäkiUusimaa
    6.2
  4. 4HelsinkiUusimaa
    6.1
  5. 5JyväskyläCentral Finland
    5.8
  6. 6VantaaUusimaa
    5.1
  7. 7LappeenrantaSouth Karelia
    5.0
  8. 8LahtiPaijat-Hame
    4.8
  9. 9TamperePirkanmaa
    4.6
  10. 10LohjaUusimaa
    4.4
  11. 11OuluNorth Ostrobothnia
    4.3
  12. 12KlaukkalaUusimaa
    2.9
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, April 2026 · Finland now